Improvement in car-heaters



z'sneens-sheet 1.

L. T. WHITE. A .GMv-H-ealer.

Patented Nov. 6, 1877.

N. PETERS, PHDTU-LITHOGRAPHER, WASHING'DN, D C

. l 2Mews-Shee't2."v L. T. WHITE.

Car-Heater'.

No. 196,961. PatentedV Nov. 6, |877.

N,FETERS, PHOTO-LITHDQRAFHER. WASHXNGTON. D C.

UNITED STATE-js PATENT OBIFIICEv LYMAN T. WHITE, or EATON HAPIDs,MICHIGAN, AssIGNoE To MARY E.

' WHITE, .0E sAME PLAGE lMPHovl-:MENT |N CAR-HEATERS,

Specil'ieation forming part of Letters Patent No. 196,961,dated'Novcmber 6, 1877 application filed v March l5, 1877.

To all whom it may concern.:

Be it known that I, LYMAN T. WHITE, of Eaton Rapids, in the'county ofEaton and State of Michigan, have invented a ne'w and useful Method ofHeating and Ventilating Railway-Trains, of which the following is aspeciiication:

rI he object I have in view is to utilize thel waste heat resultant fromthe combustion of fuel in the furnace of a passenger-locomotive and makeit available for heating the cars of a passenger-train, by causing it tocirculate through coils of pipe arranged in the several further, in thecombination and arrangement of the several parts composing my apparatus,all as more fully hereinafter explained.

Figure 1 is a longitudinalvertical sectionof a locomotive and one'car,showing my heating devices. Fig. 2 is an enlarged sectional detail ofthe coil and air-chambers in the smoke-box.- Fig. 3 is a sectionalperspective view of the pipe-coupling between the cars. Fig. 4 is across-section of the same.

In the drawing, A represents an air-chamber, placed in the front part ofthe smoke-box of a locomotive-boiler, and from which a metal pipe, B,issues at the lower part, passing back through one of the lower lluesofthe boiler; thence through the lire-box, or, if preferred, through thewater-leg, or, again, through a water-j acket in the furnace thence backunder the tender into the rst car in the train, and thence through theseveral cars to the rear end thereof, it being united,l as it passesfrom car to car, by a coupling hereinafter described. The pipe isspirally coiled in the smokebox in front of the lines, in order to beheated by the waste gases and, flame issuing from them.

4At the rear end of the train the pipe B is' united, by means of saidcoupling, with a return-pipe, B', on the other side of the car,extending in like manner to the front end of the train, passing underthe foot-plateof the locomotive and up through the cab, where it isprovided with a thermometer to indicate the temperature of thereturn-current; thence to a suction and force pump, C, located under the'ont part of the barrel ofthe boiler, the purpose of which pump is toexhaust the air from the pipes B B', and force it back into theairchamber A, and thus force the circulation of air through the traininside said pipes, which are formed into manifold coils under the seatsof the passenger-coaches, and into Wall-coilsin the baggage-cars.

The air in the pipes, where they are exposed to the action of thellames, and also that in the chamber A, becomes highly heated, and as itpasses through the pipes in the trai-n gives oli' its heat by radiation.

The air-pump may be an ordinary direct-acting device of the usualconstruction, driven by live steam or by exhaust steam; but in eithercase, under the control of the engineer,

who regulates its speed accordingly as more or less heat is required inthe train, being guided by the temperature of the return-currents asread off the thermometer in the cab.

As the temperature in the chamber A falls, and the air therein becomesdenser, fresh air is admitted thereto through a pipe, a, at the front ofthe boiler, provided with a self-acting valve, b, which opens wheneverthe pressure of the external atmosphere exceeds that within the chamberA, and thus admits the necessary volume of air thereto.

If desired, the return-pipe B may pass through the water in thelocomotive-tender in a coil, and thus raise the temperature of thefeed-water.

The coupling D is composed of three short nipples, coupled by fourelbows into the line of pipe. Each nipple is cut in two, and the twohalves are coupled together by a runningsocket, o, or one screwed upon aflanged union, c', slipped upon the llanged end of the other half of thenipple, on which itis free to rotate axially, while leakage at the Imionis prevented by packing the joint. .This form of coupling enables theend nipples to approach or recede as the cars play back and forth.

The middle coupling D is cut in two and bevel-flanged at the meetingends, with an in-A terposed packingring, d. These an ges are clasped bya double-anged ring, E, cut in two parts, joined at one side by a spiralspring, e, and at the other by a screw, f, passing through lugs at theends of the section.

The screw f compresses the parts of thering then have reversible valves,andits inlet be disconnected from the coils in the smoke-box. It canthen be used to force air through the pipes into the train.

At terminal stations, and places Where locomotives are changed, to heatthe train when standing disconnected from the. locomotive,

the pipes are to be connected to a local airheating furnace, throughwhich circulation is effected by a steam or hand pump, the connectionwith the train-pipes being made with flexible tubes.

What I claim as my invention is I l. In apparatus forheatingrailwaycars,the combination, with aloeomotiveengine, of the pipeB, heated. by the hot gases of combustion issuing from the lues of thelocomotive-boiler, the return-pipe B', a suitable connecting box orchamber, and the steam-driven air-pump C, whereby a constant stream ofhot air is forced through pipes extending throughout the train andreturned to the locomotive to be reheated, substantially as described. I

2. In apparatus for heatingrailWay-cars,the combination, With a1ocomotivefengine, of the hotair chamber A, hot-air pipe B, return-pipeB', air-pump C, and air-supply pipe a, substantially as described andshown.

LYMAN T. WHITE.

Witnesses:

PHILIP LEONARD, O. M. Fnos'r.

